Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of zinc-exchanged montmorillonite with different zinc loading capacities on growth performance, intestinal microbiota, morphology and permeability in weaned piglets
Abstract Three zinc-exchanged montmorillonites (Zn-Mt1, Zn-Mt2, and Zn-Mt3, the amount of Zn adsorbed on Mt was 6.3×104, 5.1×104 and 4.2×104 mg/kg, respectively) were used to study the effects on growth performance, diarrhea, intestinal microbiota and barrier function in weaned piglets. A total of 144 piglets (Duroc×Landrace×Yorkshire), weaned at 21±1d with average initial body weight of 6.5kg were allotted to four treatments groups for two weeks. Four treatments were: (1) control: basal diet; (2) ZM1: basal diet+150mg/kg Zn as Zn-Mt1; (3) ZM2: basal diet+150mg/kg Zn as Zn-Mt2; and (4) ZM3: basal diet+150mg/kg Zn as Zn-Mt3. Results showed that, compared with the control, supplementation of Zn-Mt2 or Zn-Mt3 improved (P <0.05) average daily gain (ADG) and average daily feed intake (ADFI), and lowered (P <0.05) fecal scores. Supplemental Zn-Mt2 or Zn-Mt3 increased (P <0.05) villus height and the ratio of villus height and crypt depth at the jejunal mucosa. Supplementation of Zn-Mt2 or Zn-Mt3 decreased (P <0.05) the number of Escherichia coli and Streptococcus suis, the paracellular permeability of fluorescein isothiocyanate dextran 4kDa (FD4), but increased transepithelial electrical resistance (TER) in jejunum and colon of weaned piglets. No difference was observed between the Zn-Mt1 group and the control group. The results indicated that the in vivo efficacy of three Zn-Mts was different. Supplementation of Zn-Mt2 was as effective as Zn-Mt3 in enhancing growth performance, alleviating diarrhea, as well as improving intestinal microbiota, barrier function of weaned pigs under our trial conditions.
Highlights Providing 150mg Zn/kg, the in vivo efficacy of three Zn-Mts is different. Zn-Mt2 and Zn-Mt3 increased average daily gain of weaned pigs. Zn-Mt2 and Zn-Mt3 decreased intestinal E. coli and Streptococcus suis of weaned pigs. Zn-Mt2 and Zn-Mt3 improved intestinal morphology and barrier function of weaned pigs.
Effects of zinc-exchanged montmorillonite with different zinc loading capacities on growth performance, intestinal microbiota, morphology and permeability in weaned piglets
Abstract Three zinc-exchanged montmorillonites (Zn-Mt1, Zn-Mt2, and Zn-Mt3, the amount of Zn adsorbed on Mt was 6.3×104, 5.1×104 and 4.2×104 mg/kg, respectively) were used to study the effects on growth performance, diarrhea, intestinal microbiota and barrier function in weaned piglets. A total of 144 piglets (Duroc×Landrace×Yorkshire), weaned at 21±1d with average initial body weight of 6.5kg were allotted to four treatments groups for two weeks. Four treatments were: (1) control: basal diet; (2) ZM1: basal diet+150mg/kg Zn as Zn-Mt1; (3) ZM2: basal diet+150mg/kg Zn as Zn-Mt2; and (4) ZM3: basal diet+150mg/kg Zn as Zn-Mt3. Results showed that, compared with the control, supplementation of Zn-Mt2 or Zn-Mt3 improved (P <0.05) average daily gain (ADG) and average daily feed intake (ADFI), and lowered (P <0.05) fecal scores. Supplemental Zn-Mt2 or Zn-Mt3 increased (P <0.05) villus height and the ratio of villus height and crypt depth at the jejunal mucosa. Supplementation of Zn-Mt2 or Zn-Mt3 decreased (P <0.05) the number of Escherichia coli and Streptococcus suis, the paracellular permeability of fluorescein isothiocyanate dextran 4kDa (FD4), but increased transepithelial electrical resistance (TER) in jejunum and colon of weaned piglets. No difference was observed between the Zn-Mt1 group and the control group. The results indicated that the in vivo efficacy of three Zn-Mts was different. Supplementation of Zn-Mt2 was as effective as Zn-Mt3 in enhancing growth performance, alleviating diarrhea, as well as improving intestinal microbiota, barrier function of weaned pigs under our trial conditions.
Highlights Providing 150mg Zn/kg, the in vivo efficacy of three Zn-Mts is different. Zn-Mt2 and Zn-Mt3 increased average daily gain of weaned pigs. Zn-Mt2 and Zn-Mt3 decreased intestinal E. coli and Streptococcus suis of weaned pigs. Zn-Mt2 and Zn-Mt3 improved intestinal morphology and barrier function of weaned pigs.
Effects of zinc-exchanged montmorillonite with different zinc loading capacities on growth performance, intestinal microbiota, morphology and permeability in weaned piglets
Jiao, L.F. (Autor:in) / Ke, Y.L. (Autor:in) / Xiao, K. (Autor:in) / Song, Z.H. (Autor:in) / Lu, J.J. (Autor:in) / Hu, C.H. (Autor:in)
Applied Clay Science ; 112-113 ; 40-43
14.04.2015
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
ADFI , average daily feed intake , ADG , average daily gain , SEM , standard error of the mean , Zn-Mt , zinc-exchanged montmorillonite , FD4 , fluorescein isothiocyanate dextran 4<hsp></hsp>kDa , TER , transepithelial electrical resistance , Zinc-exchanged montmorillonite , Intestinal microbiota , Barrier integrity , Diarrhea , Weaned piglets
Effects of dietary supplementation with palygorskite on intestinal integrity in weaned piglets
| Online Contents | 2013